Question

How many grams of `CH_4` at STP would fill a 1.00 L flask?

Answer 1

`m=0.714g " of " CH_4`

Explanation:

At STP, the molar volume is equal to `22.42"L/mol"`, therefore, to calculate the number of mole of `CH_4` that fill a 1.00L flask by:

`?mol=1.00cancel(L)xx(1mol)/(22.42cancel(L))=0.0446 mol`

Now, to calculate the mass of `CH_4` in question:

`?g=0.0446cancel(mol)xx(16.01g)/(1cancel(mol))=0.714g " of " CH_4`